package com.kuang.reflection;

import java.lang.reflect.Constructor;
import java.lang.reflect.Field;
import java.lang.reflect.Method;

// 获得类的信息
public class Test08 {
    public static void main(String[] args) throws ClassNotFoundException, NoSuchFieldException, NoSuchMethodException {
        Class<?> c1 = Class.forName("com.kuang.reflection.User");

        // 获得类的名字
        System.out.println(c1.getName());
        System.out.println(c1.getSimpleName());

        Field[] fields = c1.getFields();// 只能找到public属性
        fields = c1.getDeclaredFields();// 找到所有属性
        for (Field field: fields) {
            System.out.println(field);
        }
        // 获得指定属性的值
        Field name = c1.getDeclaredField("name");
        System.out.println(name);

        // 获得类的方法
        System.out.println("===========获得类的方法===============");
        Method[] methods = c1.getMethods(); // 获得本类和父类的所有public 方法
        for (Method method: methods) {
            System.out.println("正常的：" + method);
        }
        methods = c1.getDeclaredMethods();  // 获得本类的所有方法
        for (Method method: methods) {
            System.out.println("getDeclaredMethods（）：" + method);
        }

        // 如何获得指定的方法
        Method getName = c1.getMethod("getName", null);
        Method setName = c1.getMethod("setName", String.class);
        System.out.println(getName);
        System.out.println(setName);

    //    获得指定的构造器
        System.out.println("===========获得指定的构造器===============");
        Constructor[] constructors = c1.getConstructors();
        for (Constructor constructor : constructors) {
            System.out.println(constructor);
        }
        constructors = c1.getDeclaredConstructors();
        for (Constructor constructor : constructors) {
            System.out.println("##" + constructor);
        }
        Constructor declaredConstructor = c1.getDeclaredConstructor(String.class, int.class, int.class);
        System.out.println(declaredConstructor);
    }
}
